std::queue<T,Container>::empty
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C++
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| bool empty() const; |
|
Checks if the underlying container has no elements. Equivalent to: return c.empty().
Contents |
[edit] Parameters
(none)
[edit] Return value
true if the underlying container is empty, false otherwise.
[edit] Complexity
Constant.
[edit] Example
Run this code
#include <cassert> #include <queue> int main() { std::queue<int> queue; assert(queue.empty(); queue.push(42); assert(!queue.empty(); queue.pop(); assert(queue.empty(); }
[edit] See also
| returns the number of elements (public member function) [edit] | |
| (C++17) |
checks whether the container is empty (function template) [edit] |
